Repository Issues
Microsoft/TypeScript
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Issues
Open
Unexpected circularity error when variable is initialized from a class member
BugDomain: check: Type CircularityHelp Wanted
No assignee yetHas a beginner-friendly labelContributing guide available
4 comments0 reactions0 assignees
Open
TS4055 when generating declaration for return type that uses type of paramter for protected methods
BugDomain: Declaration EmitHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
3 comments0 reactions0 assignees
Open
Missing explicit return type for static methods using private static methods causes return type inference issues in declaration files
BugDomain: Declaration EmitHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment1 reaction0 assignees
Open
Incorrect type inference for generic class in JavaScript
BugDomain: check: Type InferenceHelp Wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
Error: Debug Failure. No error for last overload signature
BugDomain: check: Variance RelationshipsFix AvailableHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
6 comments1 reaction0 assignees
Open
`Parameters` returns `never` when used with a generic function that combines `Pick` and `Partial` on the generic type argument
BugDomain: check: Type InferenceHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
Confusing error on computed name class member
Domain: Error MessagesHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
Unsafe Map overload spoils direct property access on parenthesized assignment expression
Domain: check: Type InferenceHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments2 reactions0 assignees
Open
Covariant generic parameters fail unification
BugDomain: check: Type InferenceHelp Wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
Broken Autocomplete and Type Display For Parameters Dependent on Transitively Contextually Typed Return Type
BugDomain: check: Contextual TypesHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment0 reactions0 assignees
Open
Trailing comma in dynamic import should be allowed also when used in a `typeof` type
Domain: ES ModulesHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment2 reactions0 assignees
Open
Wrong import attribute typed as any, but should be typed as string
Domain: ES ModulesHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
5 comments0 reactions0 assignees
Open
Explicit target type breaks generic parameter inference for function call with intersection return type
Domain: check: Type InferenceHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
1 comment0 reactions0 assignees
Open
`InstanceType` and constructor return type inference doesn’t work for built‑in subtypes of `ErrorConstructor`
Domain: lib.d.tsHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
4 comments1 reaction0 assignees
Open
Add types for `String.{matchAll,replaceAll}` with a well known symbol
Domain: lib.d.tsFix AvailableHelp WantedPossible Improvement
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available
3 comments0 reactions1 assignee
Open
Type alias circularly references itself
Domain: check: Type CircularityHelp WantedPossible Improvement
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
6 comments2 reactions0 assignees
Open
Allow `import.meta.url` when `module` is `node16` or `node18`
BugDomain: Node ESMHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments3 reactions0 assignees
Open
Type Conversion Error with Empty and Non-Empty Generic Types in Record Mapping
BugDomain: check: Type InferenceHelp Wanted
Why recommendedNo assignee yet · Has a beginner-friendly label
No assignee yetHas a beginner-friendly labelContributing guide available
2 comments0 reactions0 assignees
Open
Arithmetic operations on type-parameters subtyping `bigint` are incorrectly inferred to have type `number`
BugDomain: check: Type InferenceHelp Wanted
Why recommendedNo assignee yet · No comments yet
No assignee yetNo comments yetHas a beginner-friendly labelContributing guide available
0 comments0 reactions0 assignees
Open
Intellisense: deprioritise native function methods
Experience EnhancementFix AvailableHelp WantedSuggestion
Why recommendedHas a beginner-friendly label · Contributing guide available
Has a beginner-friendly labelContributing guide available
2 comments2 reactions1 assignee